List of reporting marks: G

G

 * GA  - Georgia Railroad, Seaboard System Railroad, CSX Transportation
 * GAAB - South Carolina Central Railroad (Georgia and Alabama Division)
 * GABX - General American Marks Company
 * GACX - General American Marks Company, GATX Corporation
 * GAEX - General American Marks Company
 * GAFX - Fuller Company
 * GALX - Georgia Power Company
 * GAMX - General American de Mexico, Arrendadora Nacional De Carros De Ferrocaril
 * GANO - Georgia Northern Railway
 * GAOX - General American Transportation Corporation
 * GAPX - Georgia-Pacific Corporation (Plaquemine Division), Georgia Gulf Corporation
 * GARX - General American Transportation Corporation, GATX de Mexico, SA de CV
 * GASC - Georgia, Ashburn, Sylvester & Camilla Railroad
 * GASX - General American Marks Company
 * GATU - Gateway Container Leasing
 * GATX - General American Marks Company, GATX Corporation
 * GAUX - General American Transportation Corporation
 * GAYX - General American Transportation Corporation
 * GBRX - Greenbrier Leasing Corporation
 * GBRY - Gettysburg Railway
 * GBRZ - Greenbrier Leasing Corporation
 * GBW - Green Bay and Western Railroad; Fox Valley and Western Railroad; Wisconsin Central Railway; Canadian National Railway
 * GBWX - Gerber Products Company; Sandoz; Novartis
 * GC  - Georgia Central Railway
 * GCAU - GCA Transport
 * GCCX - General American Marks Company
 * GCDU - Overseas Container
 * GCEU - Genstar Container Corporation
 * GCEZ - Genstar Container Corporation
 * GCFX - Alstom Canada Transport
 * GCGX - Gulf Coast Grain
 * GCIX - Gabriel Chemicals
 * GCLX - Gold Coast Limited
 * GCLZ - Global Chassis Leasing
 * GCMX - National Railway Historical Society (Gold Coast Chapter)
 * GCOX - Gold Coast Railroad Museum
 * GCPU - Genstar (Burlington Northern and Santa Fe Railway; BNSF Railway)
 * GCPX - Georgia Gulf Corporation (PVC Division)
 * GCRX - Grand Canyon Railway
 * GCSF - Gulf, Colorado and Santa Fe Railway
 * GCSR - Gulf, Colorado and San Saba Railway
 * GCSU - G.C.S. Containers Service, SA
 * GCTU - Gulf Container Lines
 * GCTX - General Chemical Corporation
 * GCW - Garden City Western Railway
 * GCX - Alltank Equipment Corporation, Honeywell
 * GDCX - General American Marks Company
 * GDJX - Grimmel Industries
 * GDLK - Grand Elk Railroad
 * GEAX - Trinity Rail Management
 * GECX - GE Transportation
 * GECZ - GE Capital Container Finance Corporation
 * GEGX - GE Gas Turbine
 * GELX - Garvey Elevators, Grain Marketing
 * GEMX - GE Rail Services
 * GENX - GE Rail Services
 * GEOX - GEO Specialty Chemicals
 * GEPX - Trinity Rail Management
 * GETX - Getty Refining and Marketing Company, General American Marks Company
 * GETY - Gettysburg Railroad (1976-1996)
 * GETZ - Transport International Pool
 * GEX - General Electric Company
 * GEXR - Goderich-Exeter Railway (RailAmerica)
 * GF  - Central of Georgia Railroad, Norfolk Southern
 * GFAX - Gordon Fay Associates
 * GFC - Grand Falls Central Railway
 * GFCX - Glens Falls Lehigh Cement Company
 * GFCZ - General Foods Corporation
 * GFHX - Commercial Credit Capital Corporation
 * GFJX - Garret Railroad Car & Equipment
 * GFLX - Greenfield Logistics
 * GFR - Grand Forks Railway
 * GFRR - Georgia & Florida Railroad
 * GFSX - General American Marks Company
 * GGCX - Georgia Gulf Corporation (Plaquemine Division)
 * GGIX - Garvey International (Garvey Grain Division)
 * GGMX - Golden Gate Railroad Museum
 * GGPX - General American Marks Company
 * GGS - South Carolina Central Railroad (Georgia Great Southern Division)
 * GHBX - G. Heileman Brewing Company
 * GHH - Galveston, Houston and Henderson Railroad
 * GHRD - Green Hills Rural Development (Chillicothe-Brunswick Rail Maintenance Authority)
 * GHRX - GHR Energy Corporation
 * GIEX - General American Marks Company
 * GIHX - Gifford-Hill & Company (Cornerstone C & M Incorporated); Hanson
 * GILX - Gilman Paper Company
 * GIMX - General American Marks Company
 * GITM - Golden Isles Terminal Railroad
 * GJ  - Greenwich and Johnsonville Railway
 * GJR - Guelph Junction Railway
 * GKLX - Gold Kist
 * GLBZ - Trac Lease
 * GLC - Great Lakes Central Railroad
 * GLCU - Flex-Van Leasing
 * GLCX - Great Lakes Carbon
 * GLKU - Great Lakes Chemical Corporation
 * GLKX - Great Lakes Chemical Corporation
 * GLLX - Great Lakes Locomotive Leasing
 * GLNX - GLNX Corporation
 * GLRX - Georgetown Loop Railroad
 * GLSR - Gloster Southern Railroad
 * GLSX - Glacier State Distribution Services
 * GMCX - General Motors Corporation
 * GMDX - General Motors Diesel Canada
 * GMGX - M and G Polymers USA
 * GMHX - General American Marks Company
 * GMTX - General American Marks Company
 * GMIX - Chicago Freight Car Leasing Company
 * GMO - Gulf, Mobile and Ohio Railroad, Illinois Central Gulf Railroad, Illinois Central, Canadian National Railway
 * GMRC - Green Mountain Railroad
 * GMRY - Great Miami and Scioto Railway
 * GMSR - Kansas City Southern Railway
 * GN  - Great Northern Railway, Burlington Northern Railroad, Burlington Northern and Santa Fe Railway; BNSF Railway
 * GNA - Graysonia, Nashville and Ashdown Railroad, Kansas City Southern Railway
 * GNAX - Holnam
 * GNBC - Grainbelt Corporation, Farmrail
 * GNCU - Gallatin National Company
 * GNFX - Gainesville, Florida (City of)
 * GNLX - Georgia Industrial Leasing Company
 * GNRR - Georgia Northeastern Railroad
 * GNTX - Railgon Company, TTX Corporation
 * GNWR - Genesee and Wyoming Railroad
 * GOCU - Greenfield Overseas Container
 * GOCX - Gulf Oil Products Company, Chevron Phillips Chemical Company
 * GOHX - General American Marks Company
 * GONX - Railgon Company, TTX Corporation
 * GOT - Greater Toronto Transit Authority
 * GOTU - Gulf Overseas Towing
 * GPBX - Georgia-Pacific Corporation
 * GPCX - General Electric Company (General Purpose Control Department), Georgia-Pacific Corporation
 * GPDX - General American Marks Company
 * GPEX - General American Transportation Corporation
 * GPFX - General American Marks Company, GATX Corporation
 * GPIX - General Portland, Sunbelt Cement
 * GPLU - Management Control and Maintenance
 * GPLX - General American Marks Company
 * GPMX - Georgia-Pacific Corporation (Mid Continent Wood Products Manufacturing Division)
 * GPPX - Georgia-Pacific Corporation (Portland Division)
 * GPSX - Georgia-Pacific Corporation (Eastern Wood Products Manufacturing Division)
 * GPUX - GPU Service Corporation
 * GR  - Grand Rapids Eastern Railroad
 * GRCX - Granite Rock Company (Graniterock)
 * GRDX - Grand River Dam Authority
 * GREX - Georgetown Rail Equipment Company
 * GRFF - Georgia and Florida Railroad
 * GRIV - Gauley River Railroad
 * GRLW - Greenville & Western Railway Company (Western Carolina Railway Service Corporation)
 * GRMX - Gopher State Railway Museum
 * GRN - Greenville and Northern Railway (retired mark, line now abandoned)
 * GRNR - Grand River Railway
 * GRNW - Great Northwest Railroad
 * GROI - Genesee Rail-One
 * GROX - Growth Nonstop Cooperative, First Union Rail
 * GRPX - General Chemical, CIT Financial
 * GRR - Georgetown Railroad
 * GRRX - Wampum Hardware
 * GRRY - Grand River Railway
 * GRSX - Gunderson Rail Services
 * GRTX - Savage-Tolk Energy Services
 * GRWR - Great Walton Railroad
 * GRYR - Grenada Railway
 * GRYX - John H. Grace Company, Transmatrix
 * GSAX - Granite State Concrete Company
 * GSCU - Eurotainer US
 * GSCX - Greenville Leasing Company, General American Marks Company
 * GSF - Georgia Southern and Florida Railway
 * GSI - Gulf and Ship Island Railroad
 * GSIX - Gas Supply, Williams Energy Ventures
 * GSLX - George R Silcott Railway Equipment
 * GSM - Great Smoky Mountains Railroad
 * GSNX - Gulf States Utilities Company, Helm Financial Corporation
 * GSOR - Indiana Hi-Rail Corporation
 * GSPX - Great Southern Plywood Company
 * GSRX - Golden Spike Railroad Services
 * GSSX - Gopher State Scrap and Metal
 * GSTU - Genstar Container Corporation
 * GSW - Great Southwest Railroad
 * GSWR - South Carolina Central Railroad (Georgia Southwestern Division)
 * GSWX - G and S Company
 * GT  - Grand Trunk Railway
 * GTA - Grand Trunk Western, Canadian National Railway
 * GTAX - Harvest States Cooperative
 * GTC - Gulf Transport
 * GTEU - General Transport Equipment Company
 * GTER - Grafton Terminal Railroad
 * GTIS - Guilford Transportation Industries
 * GTIZ - G. T. Intermodal USA
 * GTLZ - G. T. Leasing
 * GTP - Grand Trunk Pacific Railway (expired)
 * GTPR - Grand Trunk Pacific Railway
 * GTPZ - TIT Services
 * GTR - Great River Railroad (Rosedale-Bolivar County Port Commission)
 * GTRA - Golden Triangle Railroad
 * GTTX - Trailer Train Company, TTX Company
 * GTW - Grand Trunk Western, Canadian National Railway
 * GTWQ - Grand Trunk Western, Canadian National Railway
 * GTZZ - GT Trucking
 * GU  - Grafton and Upton Railroad
 * GUAX - Georgia Power Company
 * GUEX - General American Marks Company
 * GURZ - Grafton and Upton Railroad
 * GVCX - Glen-Valley Corporation
 * GVDX - Oxy Vinyls
 * GVSR - Galveston Railroad
 * GWAX - Railroad Salvage and Restoration
 * GWCX - Greenway Centre
 * GWER - Gateway Eastern Railway; Kansas City Southern Railway
 * GWF - Galveston Wharves
 * GWHX - Stevens Energy
 * GWIX - GWI Leasing Corporation
 * GWR - Great Western Railway of Colorado
 * GWRC - Georgia Woodlands Railroad
 * GWRS - Great Western Railway (Saskatchewan)
 * GWSR - Great Western Railway (Saskatchewan)
 * GWSW - GWI Switching Services, LP
 * GWWD - Greater Winnipeg Water District
 * GWWE - Gateway Eastern Railway
 * GWAG - Greenwood And Grizzly RailRoad
 * GWWR - Gateway Western Railway
 * GYLX - Gaylord Container Corporation